Revin Ivan
From Novosibirsk, Russia
Common russian riichi rating (CRR)
Rating date July 6, 2025 (latest changes July 5, 2025).
279 place (28.75).
how we calculated rating score
max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266
p1 = (66.67 * 1.60 * 0.71 + 83.33 * 2.20 * 1 + 0 + 0 + 0) / (1.60 * 0.71 + 2.20 * 1 + 1 + 1 + 1) = 40.91516787326892
p2 = (83.33 * 2.20 * 1 + 66.67 * 1.60 * 0.71) / max_coefficients = 16.590528720818583
score = 40.91516787326892 * 0.5 + 16.590528720818583 * 0.5 = 28.75284829704375
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-05 | 278 -> 279 | 29.69 -> 28.75 |
Akademgorodok: Riichi Mahjong Tournament 2024: 86% -> 71% |
| 2025-07-03 | 279 -> 278 | 29.69 | |
| 2025-06-15 | 270 -> 279 | 29.95 -> 29.69 | |
| 2025-06-14 | 265 -> 270 | 29.95 | |
| 2025-06-11 | 272 -> 265 | 29.95 | |
| 2025-06-08 | 270 -> 272 | 29.95 | |
| 2025-05-17 | 267 -> 270 | 29.95 | |
| 2025-05-12 | 267 | 29.57 -> 29.95 | |
| 2025-05-05 | 267 | 30.47 -> 29.57 |
Akademgorodok: Riichi Mahjong Tournament 2024: 100% -> 86% |
| 2025-05-03 | 261 -> 267 | 30.47 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 83 |
|
23/25 | 100% | 2.20 | CRR | Akademgorodok Riichi Mahjong Tournament 2025 | Novosibirsk |
| 2 | 67 |
|
15/16 | 71% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 | Novosibirsk |